Modification of Asphalt Oxidation and Binders with Polymers

a technology of oxidation and binders, which is applied in the direction of climate sustainability, solid waste management, sustainable waste treatment, etc., can solve the problems of not being used, paving asphalt is often made harder to reduce penetration, and the oxidation process is both timely and costly. achieve the effect of improving the performance grade of the paving asphalt binder
US20210087113A1Inactive Publication Date: 2021-03-25GREENMANTRA RECYCLING TECH
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Patent Information

Authority / Receiving Office
US ¡ United States
Current Assignee / Owner
GREENMANTRA RECYCLING TECH
Publication Date
2021-03-25
Estimated Expiration
Not applicable ¡ inactive patent

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Abstract

Asphalt can be modified by polymers, oligomers, and waxes made from polymeric material. The addition of polymer, oligomer, or wax can increase the softening point of the asphalt, decrease the penetration of the asphalt, and / or shorten the oxidation of the asphalt. In some embodiments, polymer, oligomer, or wax is added to an oxidized asphalt. The polymer, oligomer, or wax can be made by catalytic depolymerization and / or thermal degradation of polymeric material. The polymeric material can be polystyrene, polypropylene, polyethylene, a combination of polypropylene and polyethylene or recycled plastics. In some embodiments, addition of the polymer, oligomer, or wax improves the performance grade of a paving asphalt binder alone or in combination with other modifiers such as ground tire rubber and polymers. The addition of wax can increase the high service temperature of the asphalt binder.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of International Application No. PCT / CA2019 / 050762 having an international filing date of May 9, 2019 entitled “Modification of Asphalt Oxidation and Binders with Polymers”. The '762 application is related to and claims priority benefits from U.S. Provisional Application Ser. No. 62 / 679,150 filed on Jun. 1, 2018 entitled “Modification of Asphalt Oxidation with Waxes Derived from Depolymerization of Plastic”. The '762 application is also related to and claims priority benefits from U.S. Provisional Application Ser. No. 62 / 681,344 filed on Jun. 6, 2018 entitled “Modification of Asphalt Binders with Waxes to Improve Performance Grade”.

[0002] The '762, '150 and '344 applications are hereby incorporated by reference herein in their entireties.FIELD OF THE INVENTION

[0003] The present invention relates to a method of employing polymers, oligomers, and waxes, from now on just referred to as waxes, as additives in ...

Claims

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